These days, we suffer from extended adolescence, more adults engage with Dr Who, Minecraft, Game of Thrones etc than they do ISIL because we have so much crass and shallow news coverage delivered in width and not depth - even R4 Today is more suitable for prissy sixth formers. We feel the need to keep around us things which remind us of childhood. We are terrified of adulthood so embracing anything trendy and youthful marks us out as dynamic. Kids want to be adults, we want to be kids and we have smokers reduced to huddling together as social pariahs on rainswept pavements. Such is enlightened, civilised society.
Personally don't give a stuff about age as I can do zero about it and really not interested in doing it if I could.
There is nothing sadder (or funnier) than seeing someone in their 40's having stuffed themselves into a dress designed for an 18 year old.
Its attitude to life that is more important.